UNIT 2A Lesson 4

Question 1

How do you name a simple ionic compound?

Answer 1

1. Name the metal first (capitalized)
2. Name the non-metal second and change the ending to “ide”

Question 2

How do you determine the subscripts in a simple ionic compound?

Answer 2

with the crossover rule
1.Determine the ion formed by the metal and the non-metal
2.Write the elements sided by side with the metal first.
3.Cross-over the charges so that the charge of the metal becomes the subscript of the non-metal and vise-versa.
4.Simplify if possible. (there are no signs)

Question 3

What is a polyatomic Ion?

Answer 3

Group of atoms that act as one and have a charge.

Question 4

What is the formula for Ammonium?

Answer 4

NH₄ (+)

Question 5

What is the formula for Hydroxide?

Answer 5

OH(-)

Question 6

What is the formula for Nitrate?

Answer 6

NO₃(-)

Question 7

What is the formula for Sulfate?

Answer 7

SO₄(2-)

Question 8

What is the formula for Carbonate?

Answer 8

CO₃(2-)

Question 9

What is the formula for Phosphate?

Answer 9

PO₄(3-)

Question 10

NH₄ (+)

Answer 10

Ammonium

Question 11

OH(-)

Answer 11

Hydroxide

Question 12

NO₃(-)

Answer 12

Nitrate

Question 13

SO₄(2-)

Answer 13

Sulfate

Question 14

CO₃(2-)

Answer 14

Carbonate

Question 15

PO₄(3-)

Answer 15

Phosphate

Question 16

List all the names of the polyatomics ions to memorise:

Answer 16

1.Ammonium
2.Hydroxide
3.Nitrate
4.Sulfate
5.Carbonate
6.Phosphate

Question 17

How do you name compounds containing polyatomic ions?

Answer 17

1.Name the cation first (positive ion/polyatomic ion)
2.Name the anion (negative ion/polyatomic ion)
3.DO NOT change the ending to “ide”

Question 18

How do you write the formula for ionic compounds containing polyatomic ions?

Answer 18

1. The CROSS-OVER rule applies because they are ionic bonds
2. Treat the polyatomic ion as if it were a single atom
3. cant touch this
   MAKE SURE TO PUT BRACKETS

Question 19

How do you name ionic compounds containing transition metals ?

Answer 19

1. To determine the charges we will uncross the subscripts.
2. Next check to see if the charge of the known element (the non-metal) is correct.
3. If it is then the charge of the transition metal is also correct.
4. If it is not correct, un-simplify the charges by multiplying both charges by the necessary value. Now the charge of the transition metal will be correct.
5. Place the charge of the transition metal in brackets after its name. (ROMAN)

Question 20

How do you write the formula for ionic compounds containing transition metals ?

Answer 20

1. Use the cross over rule as you would a regular ionic bond.
2. Use the charge given in brackets for the nontransitional-metal and look for the charge of the anion on the periodic table.

Question 21

What is 5 in roman numerals?

Answer 21

V

Question 22

How do you name the formula for covalent bonds?

Answer 22

1. Name the least electronegative non-metal first with the appropriate prefix. (Exception: Do not use mono prefix for first non-metal)
2. Name the second non-metal with the appropriate prefix and change the ending to “ide”.

Question 23

List all the prefixes:

10

Answer 23

1 mono
2 di
3 tri
4 tetra
5 penta
6 hexa
7hepta
8octa
9nona
10deca

Question 24

How do you write the formula for covalent bonds?

Answer 24

1. Write the symbols for each element.
2. The subscript is determined by the prefix.
3. Do not simplify.